Results 121 to 130 of about 53,876 (297)

Effects of FACE on denitrification activity in paddy-field soil

open access: yes浙江大学学报. 农业与生命科学版, 2007
A free-air CO2 enrichment (FACE) experiment was used to investigate the effects of elevated atmospheric CO2 concentration on soil denitrification activities. The FACE system was conducted under a rice/wheat rotation at Jiangdu, China.
WANG Shu-yi   +4 more
doaj   +1 more source

The production and detoxification of a potent cytotoxin, nitric oxide, by pathogenic enteric bacteria [PDF]

open access: yes, 2011
The nitrogen cycle is based on several redox reactions that are mainly accomplished by prokaryotic organisms, some archaea and a few eukaryotes, which use these reactions for assimilatory, dissimilatory or respiratory purposes.
Anke Arkenberg   +36 more
core   +1 more source

Alterations in Gut Microbiota and Metabolism in Cirrhotic Portal Hypertension: Implications for Disease Progression

open access: yesAlimentary Pharmacology &Therapeutics, Volume 63, Issue 4, Page 538-556, February 2026.
In‐depth multiomics analyses revealed that the gut microbiota in patients with CPH is dysbiotic. Altered gut microbiota plays an important role in the progression of CPH and affects the host's arginine metabolism to promote arginine biosynthesis. The pro‐inflammatory effects of certain gut bacteria induce iNOS expression, which together act on the ...
Qun Zhang   +15 more
wiley   +1 more source

The pleiotropic transcriptional regulator NlpR contributes to the modulation of nitrogen metabolism, lipogenesis and triacylglycerol accumulation in oleaginous rhodococci [PDF]

open access: yes, 2017
The regulatory mechanisms involved in lipogenesis and triacylglycerol (TAG) accumulation are largely unknown in oleaginous rhodococci. In this study a regulatory protein (here called NlpR: Nitrogen lipid Regulator), which contributes to the modulation of
Alvarez, Hector Manuel   +4 more
core   +1 more source

Unprecedented Nitrite‐Dependent Aromatic Amination to Synthesize 2,4‐Diamino‐3‐Hydroxybenzoic Acid

open access: yesChemBioChem, Volume 27, Issue 2, January 2026.
By comparing the biosynthetic gene clusters for natural products with 2,4‐diamino‐3‐hydroxybenzoic acid (2,4,3‐DAHBA) moiety and heterologous expression in Streptomyces albus, we identified nine genes required for the biosynthesis of 2,4,3‐DAHBA, including nitrite biosynthesis genes.
Ko Kuwabara   +2 more
wiley   +1 more source

TcI isolates of Trypanosoma cruzi exploit the antioxidant network for enhanced intracellular survival in macrophages and virulence in mice [PDF]

open access: yes, 2016
Trypanosoma cruzi species is categorized into six discrete typing units (TcI to TcVI) of which TcI is most abundantly noted in the sylvatic transmission cycle and considered the major cause of human disease. In our study, the TcI strains Colombiana (COL),
Basombrío, Miguel Ángel Manuel   +8 more
core   +2 more sources

Transcriptomic Responses of the Marine Diatom Phaeodactylum tricornutum to High Carbon and Low Nitrogen Stress

open access: yesEcology and Evolution, Volume 16, Issue 1, January 2026.
To elucidate the integrated transcriptional mechanisms underlying diatom acclimation to coupled carbon–nitrogen (CN) imbalance, we employed RNA sequencing (RNA‐Seq) to characterize the global transcriptional response of the model diatom Phaeodactylum tricornutum to high CO2 (~2000 μatm) and low nitrogen (10% of nitrogen concentration in f/2 medium ...
Yi Zhang   +6 more
wiley   +1 more source

A QM/MM Study of Nitrite Binding Modes in a Three-Domain Heme-Cu Nitrite Reductase

open access: yesMolecules, 2018
Copper-containing nitrite reductases (CuNiRs) play a key role in the global nitrogen cycle by reducing nitrite (NO2−) to nitric oxide, a reaction that involves one electron and two protons.
Kakali Sen   +4 more
doaj   +1 more source

Revealing the Physiological Patterns of Dinoflagellates in North‐Eastern Adriatic Phytoplankton

open access: yesEcology and Evolution, Volume 16, Issue 1, January 2026.
Using metatranscriptomics, we have described the annual taxonomic and functional succession of the phytoplankton community in the north‐eastern Adriatic Sea, taking into account the effects of environmental factors on succession. The results obtained in this way represent the first comprehensive physiological characterisation of the phytoplankton ...
Mia Knjaz   +10 more
wiley   +1 more source

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